A concise kinetic model catering for the antioxidant reaction of thermally aged cross-linked polyethylene (XLPE) cable insulation before its abrupt performance deterioration is proposed for life prediction and condition assessment. The alternating current breakdown strength, elongation at break, carbonyl index, and pyrolysis activation energy of XLPE insulation are found to consistently display an

Plasma-activated water (PAW) has been utilised in various application fields, and a deep understanding on the plasma chemistry is the foundation of application-orientated optimisation. In this paper, a global model is built to study the chemical properties of PAW produced by a dielectric barrier discharge that is powered by nanosecond voltage pulses. The applied voltage is firstly repeated with 10 kHz

In order to achieve high performance for solving the ion flow field problem, an approach is proposed with the tensor-structured finite element method (FEM) to accelerate the Newton iteration. The Poisson equation and the continuity equation are reformulated into the tensor expressions, respectively. The element level evaluation phase is decomposed into the concatenated tensor contraction operations

The dispersion state of nanoparticles affects the properties of composites, and the crosslinking process of polymers affects the dispersion state of nanoparticles. In order to investigate the effects of crosslinking behaviour on the water-tree ageing characteristics of nanocomposite dielectrics at the molecular level, polyethylene/organic-montmorillonite (PE/organic montmorillonite (OMMT)) and crosslinked

The drive to reduce carbon emissions and meet climate change targets set by governments worldwide has led to the growth of renewable energy sources and electric vehicles in recent years. Resulting intermittent generation and centralised demand require increased transmission capacities when operating associated power systems. Existing transmission lines are not capable of meeting planned needs. In many

There are a lot of quantitative performance characterisation methods for composite insulators. However, how to apply the characterisation methods with different dimensions to comprehensively assess the health state of composite insulators remains a big problem for operators and researchers. A comprehensive health assessment model for composite insulators based on the Technique for Order Preference

The semi-conductive (SC) screen materials used in polypropylene (PP)-based cables are usually multi-component composites. Polypropylene shows poor compatibility with carbon black (CB), and CB particles tend to disperse in the elastomer phase, which results in CB non-uniform dispersion in screen materials. The non-uniform distribution of CB will cause abnormal electric fields at the screen/insulation

Silicon carbide (SiC) is widely used to improve the non-linear conductivity of non-linear resistive field grading composite. In this paper, the SiC nanoparticles are modified into core-shell nanoparticles with silica (SiO2) coating on the surface and are characterised by transmission electron microscopy and X-ray diffraction, respectively. The 7 wt% SiC@SiO2/epoxy nanocomposite is then prepared, and

Inductive pulsed power supply (IPPS) is a promising type of power supplies for electromagnetic launch, but its advantage in energy density is strongly restricted by the primary power source. Fortunately, batteries become a suitable and practical choice for the primary source. In this paper, the working process of battery powering IPPS is analysed in detail. Various indicators of the charging performance

The electric field distortion due to space charge accumulations plays a significant role in the ageing, degradation and breakdown in failure of HVDC power cables. Currently, limited experimental results of the electric field dominated by space charges are insufficient to diagnose the power cables. This paper proposes an improved long short-term memory network (LSTM) model for predicting the fluctuating

Effects of photoionisation on the development and electron runaway of the initial discharge in atmospheric air under nanosecond pulse voltage were studied via two-dimensional particle-in-cell/Monte Carlo collision simulations. It was found that photoionisation has little effect at the beginning of the initial discharge. However, as the discharge channel gradually develops towards the anode, photoionisation

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The “Journal Citation Reports” for 2021 have been released, and I am pleased to inform you that the impact factor of IEEE Vehicular Technology Magazine ( VTM ) has increased to 13.609 (from 10.384 in 2020). This is an amazing achievement that ranks VTM in second place in telecommunications (out of 94 journals), second place in transportation science and technology (out of 40 journals), and seventh

As the global pandemic appears on the verge of giving the world some respite, it is time to look back and assess some of the key lessons learned from it. Among them, as this column has been extensively reporting in past issues, is the fact that fixed and mobile broadband connectivity has alleviated the dire consequences faced by large swaths of the world population who suddenly found themselves in

Alstom signed a contract to supply 130 Coradia Stream High Capacity electric double-deck trains to Landesanstalt Schienenfahrzeuge Baden-Württemberg (SFBW) for the Baden-Württemberg network in Germany. In addition to the delivery of the trains, Alstom was also contracted to provide full-service maintenance for a period of 30 years to ensure the trains’ seamless availability. Furthermore, the contract

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The automotive industry is experiencing a remarkable move from the internal combustion engine (ICE) to an all-electric power platform. This natural shift is essentially supported by electric drive development where wide-bandgap (WBG) materials are at the center of this transformation. The shift to gallium nitride (GaN)- or silicon carbide (SiC)-based power electronics is taking place due to the theoretical

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Economic and environmental constraints, as well as technological advancements, are reshaping the traditional view of power distribution systems. In a future distribution grid, as the number of inverter- and converter-based devices increases to more than hundreds of thousands, it is rather intuitive that the current state-of-the-art technical solutions and industry practices will no longer be effective

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Hydrofluoroolefin HFO1234zeE (trans-1,3,3,3-tetrafluoroprop-1-ene) is an environmentally friendly gas insulating medium that has the potential to replace SF6. To clarify the decomposition paths and products of an HFO1234zeE/N2 gas mixture under partial discharge, the decomposition mechanism is explored with density functional theory. The results indicate that only HFO1234zeE molecules decompose in

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Solid state transformers (SSTs) feature a series of functional advantages, such as voltage level conversion, electrical isolation, power regulation and control, multiple ac and dc ports, power quality control, and communications with other intelligent devices. In recent years, smart SST, also called as smart transformer (ST), has been developed based on the integration with advanced information technology

Three billion people around the world live in severe energy poverty, including 1.1 billion who live completely off-grid. Providing affordable energy access to them can dramatically impact their living standard, health, education, productivity, and ability to be a part of modern society. In developing economies, the utilization of energy is also limited to some extent. Many programs and initiatives

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The paper “Complete Provision of MPC-Based LFC By Electric Vehicles With Inertial and Droop Support from DFIG-Based Wind Farm,” [1] contains two errors which are detailed as follows:

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